The main task of the monitoring rob

The main task of the monitoring robot is visually inspecting the status of a high radiation aerial working environment. However,commercial CCD cameras cannot survive for a long time in a high radiation environment because electric parts fail from the radiation. Commercial CCD cameras work under a total accumulated dose of 300–500 Gy. We developed a radiation hardened camera with a head separated HAD (Hole Accumulation Diode) type camera. The camera can endure radiation of up to 1 kGy by separating an image sensor and a driving circuit which is shielded with a tungsten case. The camera head is enclosed with a plastic case. Fig. 7 shows the developed radiation hardened camera.