Ziyang County, Ankang City built the first water conservation ecological monitoring point On March 28, after nearly two months of hard work, the first water and soil conservation ecological construction monitoring point in Ziyang County, Ankang City completed the construction tasks in accordance with the design requirements. The monitoring site for ecological construction of soil and water conservation in Ziyang County is an integral part of the Danzhi project. It is designed by the Yangtze River Survey and Design Institute of the Yangtze River Water Conservancy Commission and the Ziyang County Water Conservancy Bureau is responsible for the organization and implementation. The monitoring point is located in the small watershed of Xiaoshi River in Ziyang County. It consists of 9 observation areas, including 4 non-point source pollution monitoring areas such as runoff, sediment, fertilizers and pesticides, all of which are slope areas of 25 °; water and soil loss area and hazard monitoring area Five, each area is 100 square meters. Soil and water loss (rainfall, runoff, sediment, soil moisture and vegetation) and non-point source pollution (rainfall, runoff, sediment, water quality, soil nutrients and soil moisture) in the project area are all included in the monitoring content, which will be the project The district provides measured data of soil and water conservation monitoring, so as to more efficiently and accurately grasp the status of water and soil erosion in small watersheds and the number and effects of soil and water conservation measures, so as to understand the dynamics of soil and water conservation work in the local area for the higher-level business authorities to explore effective soil and water loss prevention Methods and approaches have laid a solid foundation for improving the level of prevention and control of soil erosion in small watersheds and local areas. Surface runoff sediment collection device, community runoff process observer [Introduction to community runoff process observer]: Developed using the latest international CCD image sensor and Siemens infrared sensor. The community runoff process observer adopts ARM technology, which has high reliability and strong stability, and is more cost-effective than the peer runoff process observer produced by 8-bit microcontroller and photoresistor! [Principle of community runoff process observer] Mainly used in the case of natural rainfall or artificially simulated rainfall, real-time online observation of small-flow runoff community water and soil conservation monitoring data. In the same community, according to the number of weirs, we can provide data such as rainfall, runoff flow, sediment content, and water and soil loss in runoff communities of up to 18 weir channels at the same time. In the development and production of this community, the automatic monitoring device for flow generation takes into account the characteristics of inaccurate measurement accuracy of peers. The sensor part is specially transformed into a group of transmission, three groups of receiving, and weighted evaluation algorithms, which make our community flow production process observation The instrument collection accuracy is high. At the same time, the use of advanced 32-bit ARM technology makes the system run faster and more reliable than the community runoff process observer made of the 8-bit 51 microcontroller. [Performance of community runoff process observer] 1. All-weather unattended, ultrasonic and photoelectric sensor integrated technology automatically measures data. 2. Work management data collection and storage The main control machine can store a large amount of data locally, and can download data on the spot through RS232, RS485, and CAN interface. The CAN interface communication can reach 10KM. 3. It has the function of real-time monitoring, displaying the dynamic process of each measurement parameter, and downloading curves and historical data on the computer of the host computer. 4. The sampling frequency and clock data can be freely set on the data management host computer on site, so as to realize the completely consistent function of time. 5. With GPRS wireless networking function, if several cells are not in the same area, you can network for comprehensive monitoring. 6. Using 19264 dot matrix LCD and key operation mode, the man-machine dialogue is simple and convenient. 7. The use of arm technology makes the collection accuracy high, the calculation speed fast, and the service life extended. Technical parameters of community runoff process observer: 1. Measurement range: sediment content 0-120 kg / m3; Runoff 0.018-17000ml / s; (calculated by liquid level) 2. Accuracy: The sediment content is less than 3%, and the runoff flow error is less than 3 ml / sec; 3. Liquid level measurement range: 0-1500mm, accuracy: ± 5mm; resolution: 1mm; 4. Communication interface: RS232, RS485; 5. Communication method: GPRS wireless communication, data can be uploaded to the monitoring center; 6. Display mode: dot matrix liquid crystal display; 7. Voltage range: solar power DC12V; 8. Working environment: humidity≤92% (30-50 ℃); Working temperature: -10-50 degrees Celsius; 9. Backup power: the battery can work continuously for 168 hours without the sun. 10. Data capacity: 8M FLASH storage, solid state storage for 2 years of data. 11. Sampling frequency: no sampling frequency, real-time collection. 12. Rain intensity monitoring data: 0-360mm / h, total rainfall: accuracy 0.2mm, error: +/- 0.2mm. 13. It is made of stainless steel and meets the IP65 rating. 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