US Patent 10954739 Smart rotating control device apparatus and system

A rotating control device (RCD) includes a housing configured to make a connection above a wellbore and an assembly that mates to the housing. The assembly also includes a sealing element to make a seal to a drill string and to rotate with the drill string. One or more sensors are configured to monitor conditions during operation of the RCD. The one or more sensors include one or more erosion sensors to detect erosion of the sealing element. The one or more erosion sensors are also configured to identify amounts of erosion of the sealing element.