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一种无线酒精浓度探测仪的研制 被引量:1
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作者 胡仕兵 陈子为 《电子技术应用》 2020年第3期66-70,75,共6页
针对国民经济和人们生产生活等领域对酒精气体浓度智能化检测与控制的需求,设计研制了一种无线智能酒精浓度探测仪。该仪器采用STC90C52RC单片机控制10位A/D转换器TLC1549采集酒精浓度传感器TGS2620输出的电压信号,经数据处理获得酒精... 针对国民经济和人们生产生活等领域对酒精气体浓度智能化检测与控制的需求,设计研制了一种无线智能酒精浓度探测仪。该仪器采用STC90C52RC单片机控制10位A/D转换器TLC1549采集酒精浓度传感器TGS2620输出的电压信号,经数据处理获得酒精浓度值。该数值分别由液晶显示模块DM-162、语音录放电路ISD2560和无线收发芯片nRF24L01进行实时显示、语音播报和发送至上位机。本设计采用基于对象的程序设计语言Microsoft Visual Basic 6.0开发上位机用户界面,实现酒精浓度数据的显示和保存。在软件设计中应用防脉冲干扰平均滤波算法抑制采样数据的脉动性质干扰,采用分段线性插值法作标度变换提高系统的实时性,并采用最小二乘法线性拟合技术进行系统误差校正。实物测试结果表明,该仪器的测量精度≤±2%,通信距离≤100 m,验证了设计的正确性和有效性。 展开更多
关键词 nRF24L01无线通信 酒精浓度检测 分段线性插值 线性拟合技术 串行通信控件MSComm
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Electric Energy Management Modeling for Kingdom of Bahrain
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作者 Isa Salman Qamber Mohammed Yusuf Al-Hamad Abdul Majeed Habib Abdul Karim 《Journal of Energy and Power Engineering》 2015年第10期872-885,共14页
In the deregulated economy, the maximum load forecasting is important for the electric industry. Many applications are included such as the energy generation and purchasing. The aim of the present study is to find the... In the deregulated economy, the maximum load forecasting is important for the electric industry. Many applications are included such as the energy generation and purchasing. The aim of the present study is to find the most suitable models for the peak load of the Kingdom of Bahrain. Many mathematical methods have been developing for maximum load forecasting. In the present paper, the modeling of the maximum load, population and GDP (gross domestic product) versus years obtained. The curve fitting technique used to find that models, where Graph 4.4.2 as a tool used to find the models. As well, Neuro-Fuzzy used to find the three models. Therefore, three techniques are used. These three are exponential, linear modeling and Neuro-Fuzzy. It is found that, the Neuro-Fuzzy is the most suitable and realistic one. Then, the linear modeling is the next suitable one. 展开更多
关键词 NEURO-FUZZY peak loads POPULATION GDP Graph 4.4.2 curve fitting.
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