Abstract: In recent years, algorithms based on event queries in wireless sensor networks cause the attention of many scholars at home and abroad. It produces a number of related algorithms based on the mobile nodes mostly. This paper analyzes the advantages and disadvantages of the existing window query algorithm. Aiming at the hole phenomenon by the case of a query node not collecting, and taking energy and distance into consideration when choosing the next query node, a new algorithm EQA (effective area query algorithm) is put forword. Finally, this paper simulates and analyzes the algorithm and compares it with IWQE algorithm and ESA algorithm. The result shows that the new algorithm is superior to IWQE and ESA algorithm in energy consumption, query quality, network lifetime and so on.

Key words: wireless sensor network, hole, window query, energy consuming