ROBERT B. SMITH,STEVEN C. RUPP,DANIEL A. FRIEDRICHS
申请号：
US15340150
公开号：
US20170135744A1
申请日:
2016.11.01
申请国别(地区):
US
年份:
2017
代理人:
摘要：
A system and method for return electrode monitoring are provided. The system includes an isolation circuit, a first controller, a second controller, and a detection circuit. The isolation circuit includes a transformer having a primary winding and a secondary winding. The first controller is coupled to the primary winding. The second controller and the detection circuit are coupled to the secondary winding. The detection circuit includes an interrogation signal circuit, a resonant tank filter, and a current-to-voltage converter. The interrogation signal circuit provides an interrogation signal to at least one electrode pad. The resonant tank filter filters a response signal received from the electrode pad. The current-to-voltage converter generates a voltage signal based on a current value of the response signal. The second controller generates a digital impedance value based on the voltage signal, and provides the digital impedance value to the first controller by way of the isolation circuit.
