This invention discloses a micro-orifice
solenoid valve measurement
system, method, and
lunar soil water ice content measurement method, relating to the field of
lunar soil measurement. The micro-orifice
solenoid valve measurement
system includes a
water vapor generating unit that heats ice to form
water vapor, and a weighing unit that measures the
weight change of the ice. The
water vapor generating unit is connected to a pressure stabilizing unit via an inlet
pipe with a
needle valve. The pressure stabilizing unit is connected to a vacuum tank via an outlet
pipe with the micro-orifice
solenoid valve to be measured, and a vacuum
system is used for evacuation. The measurement method combines the actual pressure value when the pressure of the pressure stabilizing unit changes according to a set gradient with the ice
weight change value to determine the relationship between the water vapor
mass flow rate of the micro-orifice solenoid valve and the pressure before the valve. In the
lunar soil water ice content measurement method, the water vapor generated when the lunar soil is heated passes through the micro-orifice solenoid valve, and the lunar
soil water ice content is obtained using the relationship between the water vapor
mass flow rate of the micro-orifice solenoid valve and the pressure before the valve. The lunar
soil water ice content measurement results of this invention have the advantages of small deviation and high accuracy.