%0 Journal Article %T Asynchronous buffer read method in development of DAQ application for supporting research of hydraulic systems %A Filo, Grzegorz %J Technical Transactions %V 2015 %N Mechanics Issue 2-M (7) 2015 %P 77-82 %K DAQ system, asynchronous data buffer, software development, object oriented programming %@ 0011-4561 %D 2016 %U https://ejournals.eu/en/journal/czasopismo-techniczne/article/asynchronous-buffer-read-method-in-development-of-daq-application-for-supporting-research-of-hydraulic-systems %X The paper presents a method of data acquisition from a DAQ card using a direct memory access (DMA) and an asynchronous read of data buffer with the FIFO queue. The method can be used to acquire measurement data in Windows™ system when the required read frequency is higher than the system’s clock frequency. The method was used in practice to measure high-speed pressure and position changes in a two cylinder hydraulic system with two-state fast switching valves.