Matthew T. Smith,David A. Meekhof,Richard B. Bylsma,David J. Anderson
申请号：
US14022483
公开号：
US20140084949A1
申请日:
2013.09.10
申请国别(地区):
US
年份:
2014
代理人:
摘要：
A surface impedance sensor and method are provided. The surface impedance sensor generally includes first and second electrodes, a driver circuit to drive the electrodes at a plurality of driving frequencies, and a detection circuit to measure the impedance across the first and second electrodes for comparison against a plurality of reference profiles. The method generally includes measuring the localized surface impedance for each of a plurality of driving frequencies to generate a measured profile, and correlating the measured profile with a reference profile. The system and method can verify contact with a particular surface and can be used with a variety of host devices, including for example ultrasound delivery devices.
