A ceramic sheathed-type glow plug, whose ceramic heating element is made of an electrically conductive conducting layer and an electrically insulating layer, is described. A heterojunction thyristor device, formed in the resonant cavity, produces an output digital electrical signal corresponding to the input digital optical signal. A processor is configured to compute a precoder matrix to minimize an error value. A data storing device is configured to store image data of images captured by the primary camera in an orientation dependent on determined rotation orientation. Rotation of the rods vertically displaces the rods with respect to the support to displace the edger member. As a result, the fuses may be reliably fused without generating cracks in the interface 42 at the time of fusing the fuses.