An electrochemical sensor system that continuously monitors and calibrates the sensors included in the system. The invention also includes a method for determining failure patterns of a sensor and incorporating into an electrochemical sensor system the ability to recognize the failure pattern and initiate...http://www.google.com.hk/patents/US7022219?utm_source=gb-gplus-share專利 US7022219 - Automated system for continuously and automatically calibrating electrochemical sensors