在多传感器信息融合时，利用传感器时间轴上一系列的检测报告确定此传感器的信息什么时候应该进行信息融合处理，什么时候不应该进行信息融合处理，从而保证信息融合结果的精确性。考虑了环境因素对检测性能的影响，对一种利用序贯分析方法计算传感器检测时间的近似方法进行了讨论。 In the multi-sensor information fusion, a series of detection reports on the sensor’s timeline are used to determine when the information of the sensor should be fused and when the information fusion should not be performed, so as to ensure the accuracy of the information fusion result. Considering the influence of environmental factors on the detection performance, an approximate method for calculating the sensor detection time by using the sequential analysis method is discussed.