From the fragrance of melons and fruits in Xinjiang to the black soil rice in the Northeast and the harvest of grains in the Central Plains, China, as a major agricultural country, has a long-standing farming culture of five thousand years. As a top priority for the national economy and people's livelihood, agricultural development has attracted much attention. As the old saying goes, "The difference between a large harvest and a small harvest depends on fertilizer, and whether there is a good harvest or not depends on water." As the mainstay of agricultural development, irrigation districts are connected to the national granary and people's livelihood.
" Irrigation area" can be regarded as a semi-artificial ecosystem, which needs to have a complete water transmission, water distribution, irrigation and drainage engineering system, and can provide irrigation and drainage services according to the needs of crops and considering the carrying capacity of water resources and environment. , which is of great significance to agricultural development. With the development of new generation information technology such as the Internet of Things, the construction of smart irrigation areas has gradually been put on the agenda. At present, the construction of irrigation districts in my country is facing many changes.
Irrigation area site selection is usually characterized by "remoteness and sparse personnel". However, traditional irrigation area operations require a large number of manpower to record water volume changes, control equipment operations, etc. on site, which creates a conflict between personnel and workload, resulting in various villages The water conservators' work is not implemented in place, and the awareness of water-saving irrigation is not strong.
Secondly, the supporting construction of traditional branch canals in irrigation areas is relatively lagging behind, and the water loss in the channels is large. Measuring facilities generally only have simple water gauges. Irrigation water supply is also carried out by irrigation district managers based on the reservoir water volume. There is no accurate measurement of water consumption in the irrigation area. Approval can easily lead to a mismatch between "water use and water release" in the irrigation area, resulting in water waste. In addition, the control buildings on the channel, dangerous sections, flood control projects, water consumption and storage monitoring, etc. are basically completed by manpower, which not only results in high labor costs, but also inefficiency and certain risks.
With the development of new generation information technologies such as the Internet of Things and big data, in view of the practical application pain points of the above-mentioned irrigation district construction in terms of data collection, monitoring data, decision-making basis, water fee calculation, water distribution scheduling, patrol inspection, etc., Quectel Communications has Based on the informatization of irrigation district construction, the principles of determining water demand, measuring water, and adapting to water conditions are integrated, and the construction capabilities of "monitoring + platform" are used to realize smart early warning, smart dispatching/regulation and smart decision-making in the irrigation district, and promote The development of irrigation areas is coordinated with the carrying capacity of water resources and water environment.
For example, Cili County, which belongs to Zhangjiajie City, Hunan Province, is a mountainous county with the characteristics of "seven mountains, half water and half fields, and one part roads and manors". There are 1 large irrigation district, 9 medium-sized irrigation districts and 13 small irrigation districts in the county. The total length of backbone irrigation channels in Cili County is 1,657.2km, the total length of drainage ditches (channels) is 594.8km, there are 1,206 backbone canal buildings, and the total length of field channel projects is 1,402.6km. The county's crop production is closely related to the construction of irrigation areas. However, many of the irrigation areas built in the 1960s and 1970s can no longer meet the needs of contemporary production. Moreover, the channels are seriously "siltated, collapsed, leaked, and blocked", and the canal system buildings are aging and damaged. protrude.
In order to restore the irrigation capacity of the irrigation area, supporting construction of farmland water conservancy project facilities in the county has been carried out in recent years. Quectel has designed corresponding monitoring systems and platforms based on the actual situation of the county's water conservancy projects to help customers promote the construction of smart irrigation areas.
Flow monitoring system
This time, the construction of smart irrigation districts in Cili County involves a total of 5 irrigation districts: Baiyangyu Irrigation District, Ganyan Irrigation District, Tayu Reservoir Irrigation District, Xujiafang Irrigation District and Yichongqiao Irrigation District. In order to fundamentally solve the long-standing problem of high labor costs, Quectel combined its long-term experience in irrigation areas and existing software and hardware products to systematically sort out the on-site conditions, past data, field feasibility and construction conditions in the irrigation areas. There are 34 integrated radar flow monitoring points set up in the main and branch canals of medium-sized irrigation areas to monitor changes in key data such as water flow remotely and in real time.
The integrated radar flow meter is a non-contact and integrated flow monitoring device that can continuously measure flow velocity, water level and flow rate. It uses radar plane microwave technology to measure the surface velocity of water flow using the Doppler radar principle in a non-contact manner, and uses built-in microstrip radar technology to measure water level, making it highly reliable and easy to maintain. It is worth mentioning that the integrated radar flowmeter also uses solar panels for power supply, so that it can be used normally even in remote mountain villages and other places, without being affected by the hydrological environment, and the monitoring cost and efficiency have been comprehensively upgraded.
Smart irrigation district integrated management platform
In order to further improve the efficiency of irrigation area management, Quectel has also built an integrated management platform for smart irrigation areas . The platform is the core of information processing and services in the irrigation area information management system. It is mainly composed of computer network, database, and application system. Its main functions include information collection, data statistics, irrigation area map and other functional modules.
Information collection: Cili County Medium-sized Irrigation District Management Center has built a complete medium-sized irrigation district information collection system. All information on the Baiyangyu, Ganyan, Tayu Reservoir, Xujiafang and Yichongqiao irrigation districts within the scope of the system is collected by the center. The information collection system uniformly collects and summarizes information.
Data statistics: After data collection, the system will collect statistics on water storage volume, water consumption, remaining volume and other data during the actual operation of irrigation, providing practical basis for timely adjustment of water use plans. After the irrigation is completed, the information collection system will also summarize the water use and automatically generate statistical reports such as weekly irrigation reports, quarterly reports, and annual reports.
A map of the irrigation area: In this phase of construction, based on the high-precision satellite images of Cili County, the platform also processes and develops information such as the scope of the irrigation area and irrigation area metering equipment. Not only does it allow users to clearly see the irrigation area thematic layer, including irrigation area scope, channels, irrigation area buildings and other information, it also facilitates integration and organization with other water conservancy business applications to achieve optimal distribution and measurement and control management of irrigation water, water resources Optimized scheduling and efficient utilization to improve the water-saving rate of efficient irrigation.
For Cili County, which is "water-oriented", the establishment of a flow monitoring system and an integrated management platform can help the irrigation district achieve all-round and multi-angle monitoring of water inflow prediction, water management, water storage monitoring, and water flow rate monitoring. Function. On this basis, combined with the actual business of the irrigation district, business management such as water measurement monitoring, water fee collection, and engineering inspections can also be gradually realized to achieve "full time and space perception, multi-dimensional decision-making, grid supervision, panoramic monitoring, Refined management and control.”
Irrigation areas are a major public welfare infrastructure for my country's economic and social development. They are the lifeblood of national food security and effective supply of agricultural products. They are also an important carrier of water supply for cities and towns, industry and the ecological environment. In the future, Quectel will continue to strengthen the exploration and construction of water conservancy platform systems to comprehensively improve the comprehensive management level of irrigation areas and promote the modern development of regional agriculture.