Nghiên cứu lựa chọn giải pháp công nghệ quan trắc để xây dựng hệ thống cảnh báo mực nước lũ cho các lưu vực sông nhỏ ở Việt Nam

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Tác giả: Minh Hải Nguyễn, Quang Ngọc Trần, Ngọc Linh Vũ

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khí tượng Thủy văn, 2022

Mô tả vật lý: tr.45666

Bộ sưu tập: Metadata

ID: 334782

Thêm vào giỏ Liên kết toàn văn

Bài báo trình bày kết quả cải tiến sáng chế độc quyền “Thiết bị cảnh báo lũ từ xa sử dụng sóng vô tuyến” của tác giả Nguyễn Đức Hùng để phù hợp với điều kiện thực tế, phục vụ giám sát mực nước theo thời gian thực và phát tin cảnh báo lũ cho cộng đồng dân cư sinh sống trong lưu vực sông, suối nhỏ. Thông qua việc sử dụng tiêu chuẩn Rayleigh để lựa chọn băng tần sóng radio, hệ thống được thiết kế thêm các phương án truyền dữ liệu, các giao thức kết nối, bổ sung bộ tích hợp, lưu trữ dữ liệu, lập trình cấu trúc dữ liệu và báo trạng thái thiết bị. Sau khi nâng cấp, thiết bị cảnh báo lũ từ xa sử dụng sóng vô tuyến có thể kết nối với các đầu đo mực nước hiện đại, các điểm đo sử dụng chung một tần số sóng vô tuyến, có thêm tính năng truyền dữ liệu qua GPRS, 3G/4G và tích hợp, lưu trữ dữ liệu. Tiến hành thử nghiệm hoạt động của hệ thống tại phòng thí nghiệm và ngoài trời kết quả đạt được, bộ phận thu, phát kết nối tốt với nhau qua sóng radio HF, thử nghiệm giả định với 03 mức cảnh báo cho thấy, bộ phận đo mực nước hoạt động tốt, bộ phận phát cảnh báo đã nhận được tín hiệu và phát thông tin cảnh báo tương ứng với 03 mức giả định. Các thông số thử nghiệm đều đạt kết quả tốt, hệ thống này có thể áp dụng vào thực tế phục vụ giám sát, cảnh báo mực nước lũ thời gian thực cho khu vực sông, suối nhỏ ở nước ta.This paper presents the results of improving the exclusive patent “Remote flood warning device using radio waves” by author Nguyen Duc Hung to suit actual conditions, serving water level monitoring over time. Realize and broadcast flood warnings to communities living in small river and stream basins (sub–basin). Through the use of Rayleigh standard for radio frequency band selection, the system is designed with additional data transmission options, connection protocols, additional integrators, data storage, and structured programming. data and device status reports. After upgrading, the remote flood warning device using radio waves can be connected to modern water level gauges, measuring points using the same radio frequency, with additional data transmission features. over GPRS, 3G/4G and integrated, data storage (datalogger). Testing the operation of the system in the laboratory and outdoors, the results are obtained, the receiver and transmitter are well connected via HF radio waves, the hypothetical test with 03 warning levels shows that the part The water level gauge works well, the alarm transmitter has received the signal and broadcasts the warning information corresponding to 03 levels of assumption. Testing parameters have achieved good results, this system can be applied in practice to monitor and warn real–time flood water levels for sub–basin in Vietnam.

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