Aiming at the frequent accidents of ammonia leakage in the cold storage nowadays

an ammonia monitoring system and leaking localization method based on wireless sensor networks is presented.The designs of the sensor node and coordinator are introduced in detail.The ammonia dispersion model and localization algorithm are proposed.Simulation experiments and analysis on algorithm comparison in different monitoring area.The experimental results show that the relative localization error of the centroid algorithm is about 11 %

50 % lower than the closed point method.It is conducive to quickly find the leaking position and solve the ammonia leakage accidents in the cold storage.