The multi-perspective constant aerial surveillance system (M-CASS), which can overcome the limited mission time (~20min.) of conventional battery-based aerial robots, is our new proposal for disaster search and rescue. The M-CASS includes two special sub-systems: one is a stationary tethered aerial robot system (STAR) that differentiates itself from conventional battery-based aerial robots with its unique ability to constantly stay up with a virtue of the required power transfer through thin multi-wounded power cables. In addition, the power cables may be also used for communications since wireless communications networks are usually disrupted during emergency situations. So far, the maximum altitude of 80 m for the STAR has been achieved without any tangled cables and additional investigations of the STAR are ongoing for the world-record maximum altitude of 200 m to be demonstrated in the final competition demonstration. The other one is the novel 3-D wireless charging platform (3-D WCP) for the free-moving aerial robot (FAR), which can perform the world-first omni-directional wireless charging of the FARs without any need to plug-in. 

One of the best applications for the proposed M-CASS can be a temporary security set-up for a big event with VIPs as follows:

The vehicles move around in their designated routes or stop at a certain location, using the stationary tethered aerial robot (STAR) hovering above for scanning for any abnormality with high altitude. When the STAR’s camera catches something unusual, the main controller of the M-CASS automatically sends out the free-moving aerial robot (FAR) that was resting on the wireless charging pad for its battery charging. The FAR moves closer to the target object, constantly zooming in. The FAR gets close enough to get a clear shot of the object: an unidentified person who doesn’t appear to be a guest and is holding what looks like firearms. The system immediately sounds an alarm and sends the position of the unidentified individual to the security guards. The FAR and the STAR both look around for any more unusual signs and the FAR returns to its wireless charging plate while the vehicle resumes its normal route.