Dean Kamen,Larry B. Gray,Russell H. Beavis,John M. Kerwin,Derek G. Kane
申请号：
US14872676
公开号：
US10369299B2
申请日:
2015.10.01
申请国别(地区):
US
年份:
2019
代理人:
摘要：
An apparatus for determining the volume of fluid dispensed. The apparatus has an acoustic volume sensor that acoustically excites a reference volume and a measurement chamber with a loudspeaker and measures the acoustic response with microphones acoustically coupled to the reference and the measurement chamber. The loudspeaker and sensing microphones are connected to the measurement chamber by separate ports. A detachable dispensing chamber is coupled to the acoustic volume sensor. The volume of the fluid dispensed is determined by a processor based on the acoustic response of the microphones to acoustic excitement by the loudspeaker.
