Edgar Martinus Van Gool,Mark Thomas Johnson,Johannes Hendrikus Maria Spruit
申请号：
US14649034
公开号：
US09526598B2
申请日:
2013.12.20
申请国别(地区):
US
年份:
2016
代理人:
摘要：
A detection apparatus (400, 1100) detects the presence of a substance (116) on a surface (31, 33) based on measurement of a signal of obstructing the passage of second fluid (30) through a first stream probe and confirmation that the substance is not the gums of a subject or a user of the detection apparatus and not the generation of a false alarm signal that the substance is the gums of the subject or of the user of the detection apparatus by comparing to a signal of at least partial obstruction to a signal correlating to an object not obstructing the passage of fluid (30) through a second stream probe (402). The signals may include pressure, flow rate and strain.
