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A method and system for determination of a pressure of the pressurized fluid with the use of a diaphragm pump responsible for accumulating the pressurized fluid in the vessel. The pump has a pump cavity and a diaphragm with a piezoelectric element which is actuated by an application of a voltage to

A method and system for determination of a pressure of the pressurized fluid with the use of a diaphragm pump responsible for accumulating the pressurized fluid in the vessel. The pump has a pump cavity and a diaphragm with a piezoelectric element which is actuated by an application of a voltage to displace the diaphragm for pumping a fluid into the vessel. The method comprises the steps of:

대표청구항 ▼

[ What is claimed is:] [6.] A miniature pump system for accumulating a pressurized fluid into a vessel and having a capability of measuring the pressure of the pressurized fluid, said pump system comprising:a pump having a pump cavity and a diaphragm covering said pump cavity, said diaphragm includi

[ What is claimed is:] [6.] A miniature pump system for accumulating a pressurized fluid into a vessel and having a capability of measuring the pressure of the pressurized fluid, said pump system comprising:a pump having a pump cavity and a diaphragm covering said pump cavity, said diaphragm including a piezoelectric element which displaces the diaphragm, in response to a voltage applied to said piezoelectric element, to draw a fluid into the pump cavity and feed it into said vessel for accumulating said pressurized fluid in said vessel;return means which allows said pressurized fluid to return into said pump cavity from said vessel while prohibiting non-pressurized fluid from entering said pump cavity;control means which provides a measurement cycle and deenergizes, within said measurement cycle, said piezoelectric element to stop actuating the diaphragm while at the same time activates said return means to introduce the pressurized fluid into said pump cavity back from said vessel for displacing said diaphragm by the pressurized fluid being introduced; andprocessing means which derives an electrical signal caused by the displacement of said diaphragm within said measurement cycle and translate the electrical signal into a corresponding pressure value indicative of the pressure of said pressurized fluid in said vessel.