| According to the actual theoretical mechanics and the mechanics of materials ex- perimental needs, the issue using an advanced ARM microcomputer technology and high-speed USB digital communication technology developed a generic dynamic load experimental installation by chosing the industry's fastest channel scan rate /minimum waiting time of 24-bit analog-to-digital converter ADS1258. The equipment has the b- bility of completing alternating load amplitude loading experiments, structural vibrati- ion characteristics and structure sweep experiments, such as vibration resonance expe- riments.In view of development of the generic dynamic load experimental installation based on microprocessor LPC2210 and the real-time embedded operating systemμC/OS-IIenvironment, the paper discusses the design of the system in a number of key technologys. It first to moved the strain testing principle, as well as the working principle of dynamic load experimental installation and such as system realizes plan to make the total elaboration.Then broken down to each function module design including hardware and software of the main control board and so on. This paper describes aμC/OS-II, as well as the related content, such as ARM in detail and gives a comprehensive introduction of the analog-to-digital converter ADS1258.The main work of the PC is the USB drive's program.Described in detail in this paper on the Windows 2000/XP under the WDM Driver Model and USB1.1 protocal. On this basis, DriverWorks is prepared using USB driver, and completed the applications program.Finally, with the intensity beam, completed the data acquisition contingency related to an experiment to test the equipment functions and performance, achieved the expected goals. |
PDF Full Text Request