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针对工业无线传感器网络(industrial wireless sensor networks,IWSN)中的Sybil攻击问题,采用了一种基于接收信号强度指示(received signal strength indicator,RSSI)二次差值和节点信任值的双层检测方案.首先,高能节点相互协作,利用普通节点的RSSI二次差值是否低于检测阈值,对普通节点中Sybil攻击进行检测;其次,基于高能节点间的成功交互数量与不成功交互数量,基站计算出每个高能节点的信任值,通过信任值判断高能节点是否受到Sybil攻击.OPNET仿真结果表明该方案可以有效地检测IWSN中Sybil攻击,保证较低的虚警率和漏警率.“,”A double detection scheme of the received signal strength indicator (RSSI) quadratic difference and node trust value is adopted for solving the Sybil attack problem affecting the industrial wireless sensor networks ( IWSN) . First, the high-energy nodes cooperate to detect the Sybil attack in the general node by checking whether the RSSI quadratic difference of ordinary nodes is lower than the detection threshold. Secondly, based on the number of suc-cessful interactions and the number of unsuccessful interactions between high-energy nodes, the base station calcu-lates the trust value of each high-energy node and determines whether the high-energy node has been subjected to the Sybil attack by assessing whether the trust value of each high-energy node is higher than the trust threshold. The simulation results showed that the proposed scheme could efficiently detect Sybil attacks in IWSN;it also guar-antees a lower false alarm rate and missing alarm rate and has an improved detection accuracy.