A sensor signal processing device includes an AD conversion section, a filter section, a timing signal generation section, and an arithmetic section. In preferred embodiments, these pesticidal proteins have molecular weights of approximately 40-50 kDa and of approximately 10-15 kDa. The second end portion of the second wall is folded over the first end portion of the first wall. The computational device includes a detection device for detecting shake so as to perform an image analysis on the image data and detect changes in a time sequence of the image data.