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为减少工业氨气泄漏造成的环境污染、人员伤害及财产损失,建立适用于工业氨气泄漏的气体扩散高斯模型,提出氨气泄漏源的定位方法,并研制出一套基于Zig Bee无线传感网的氨气泄漏无线监测系统,其主要包括检测节点、网络协调器以及上位机。试验模拟不同浓度下的氨气泄漏定位,实测的相对定位误差约为12%。试验结果表明:通过简化后的气体扩散高斯模型检测空气中的氨气浓度,并对泄漏源定位,结果与实际情况相符,测量精度符合国家标准;增加氨气传感器的数量可降低定位误差,提高救援抢险效率。
In order to reduce the environmental pollution, personal injury and property loss caused by industrial ammonia leakage, a gas diffusion Gaussian model suitable for industrial ammonia leakage is established, a method for locating the ammonia leakage source is proposed, and a Zig Bee wireless sensor Network ammonia leak wireless monitoring system, which includes the detection node, the network coordinator and the host computer. Experimental simulation of ammonia concentration at different concentrations of leakage positioning, the measured relative positioning error of about 12%. The experimental results show that: the simplified gas diffusion Gaussian model is used to detect the concentration of ammonia in the air and locate the leak source. The result is consistent with the actual situation and the measurement accuracy conforms to the national standard. Increasing the number of ammonia sensors can reduce the positioning error and increase Rescue rescue efficiency.