Large Capacity Multi - Channel Data Acquisition System Based On USB

In the flight experiment of aircraft, the mass data acquisition ,storage and transfer is always one important part of system ,especially for the measurement of parameters such as temperature and pressure of cockpit .In order to meet these needs ,we design this simultaneous data acquisition system with multi-channel and large-capacity, which is based on single chip microprocessor and USB interface .It overcomes some shortcomings of traditional devices such as: big size ,short work time , small memory capacity etc .It also has many advantages of high speed, low power dissipation , ease-of-use, ease to expand port,supporting plug-play , low-cost etc, so it will be used very widely .This thesis introduces a new data acquisition system based on USB specification 1.1. The main points are as followed:1. Working principle and process of this system.2. The block A/D technology.3. The store-while-acquisition t technology.4. USB interface technology.5. WDM device driver.6. Application of this system.7. Debugging result.