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In this paper, a novel method using a dynamic pyroelectric infrared (PIR) sensor to detect and identification themoving target is presented. The sensor equipped with an infrared lens acts as an optical setup for this system, which is driven by a uniformly rotating device, a single detector can collect into infrared signals within a range of 360◦. The method solves the problems that improving the (PIR) sensor’s detection range will inevitably reduce the detection distance and increasing the detection distance will inevitably decrease the detection range. Experimental results show that (PIR) detector in regular running state can monitor a wide range of regions, and accurately determine the target orientation without decreasing the detection range. Using frame differential method can extract target information and using principal component analysis achieved the identification of target expand the use of pyroelectric sensor field.

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