MULTICHANNEL MEASURING DEVICE FOR AERODYNAMIC INTRAMODEL WEIGHTS Russian patent published in 2012 - IPC G01L1/22 

FIELD: physics.

SUBSTANCE: multichannel measuring device is placed inside a model near strain gauge bridges powered by direct current and galvanically isolated from external power sources, wherein the present invention excludes measuring lines, and also includes precision instrument amplifiers, a multichannel high-speed sigma-delta analogue-to-digital converter connected by a synchronous serial peripheral interface (SPI) to a microcontroller which is in turn connected to an external storage device (flash memory). The invention also provides circuitry for suppressing systematic additive noise.

EFFECT: high accuracy and high speed of operation of the measuring device when determining aerodynamic characteristics of aircraft models.

1 dwg