Ứng dụng công nghệ IoT trong cảnh báo rò rỉ khí gas hộ gia đình

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Tác giả: Trọng Hiếu Lưu, Chí Ngôn Nguyễn, Thị Xê Riêng Phan

Ngôn ngữ: Vie

Ký hiệu phân loại: 004 Data processing || Computer science

Thông tin xuất bản: Khoa học (Đại học Cần Thơ) 2022

Mô tả vật lý: 44-51

Bộ sưu tập: Metadata

ID: 410042

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Tóm tắt
Chủ đề

Bài bài trình bày một giải pháp ứng dụng công nghệ IoT trong phòng chống cháy nổ do rò rỉ khí gas hộ gia đình. Hệ thống gồm một ứng dụng trên điện thoại thông minh và một mạch IoT có khả năng điều khiển cấp nguồn các thiết bị, phát hiện rò rỉ khí gas và theo dõi nhiệt độ môi trường. Phần mềm ứng dụng điện thoại được xây dựng dựa trên công cụ Blynk, tiện lợi và dễ cài đặt trên các điện thoại phổ biến trên thị trường. Phần cứng bao gồm một vi điều khiển ESP8266 thu thập dữ liệu từ hai cảm biến nhiệt độ DS18B20 và cảm biến khí gas MQ-02. Vi điều khiển còn có thể báo động bằng còi và ngắt điện trong nhà thông qua một rơ-le trung gian. Phần mềm hệ thống của mạch IoT được tích hợp hàm bù sai số, được xác định bằng giải thuật bình phương tối thiểu Levenberg-Marquardt. Ngoài ra, dữ liệu đọc được từ cảm biến cũng được xử lý loại mẫu nhiễu có biên độ bất thường. Kết quả thực nghiệm cho thấy giải pháp ứng dụng công nghệ IoT có thể phát hiện rò rỉ khí gas và cảnh báo kịp thời, không xuất hiện tình trạng "cảnh báo giả" như các cảm biến gas phổ thông trên thị trường., Tóm tắt tiếng anh, This paper presents a solution for applying IoT technology to fire prevention from household gas leakages. The system consists of a smartphone application and an IoT circuit which can control equipment's power supply, detect gas leakages, and monitor environment temperature. The smartphone application is built based on the Blynk tool, which is highly convenient and easy to install. The hardware consists of an ESP8266 microcontroller that collects data from two sensors, including DS18B20 temperature sensor and MQ-02 gas detector. The microcontroller can also alarm with a buzzer and cut off the power supply in the kitchen through an intermediate relay. The IoT circuit is integrated with an error compensation function, which is determined by the Levenberg-Marquardt least squares algorithm. In addition, the sensor data is also removed noised samples with abnormal amplitudes. Experimental results showed that the IoT circuit can detect gas leakages and release warning in a timely manner, without the appearance of "fake alarms" like common gas sensors on the market

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