METHOD AND DEVICE FOR MEASURING PRESSURE Russian patent published in 2007 - IPC G01L9/04 

FIELD: measuring technique.

SUBSTANCE: method and device can be used for measuring pressure of liquid and gaseous media. Pressure sensor is used on base of resistance strain bridge and temperature detector. Output signals from bridge and temperature detector are registered; pressure of medium is found from the values measured; signal is formed to correspond to total resistance of resistance strain bridge; diagnostics function is determined on base of the signal and on base of output signals of bridge and temperature detector. Error of pressure measurement is found from inclination of the function from standard one. Device for measuring pressure has voltage source, resistance strain bridge and reference resistor. Outputs of measuring diagonal of bridge are connected with first differential inputs of analog-to-digital converter. Second differential inputs of analog-to-digital converter are connected with power inputs of bridge. Outputs of resistor are connected with differential inputs of standard voltage of analog-to-digital converter. Outputs of digital interface of analog-to-digital converter are connected with first outputs of microcontroller. Second outputs of microcontroller are connected with outputs of temperature detector of resistance strain bridge.

EFFECT: widened functional abilities.

2 cl, 1 dwg