【摘要】 文章选用AT89C51单片机为主控芯片,并辅以恒流源电路,高精度A/D采集电路、按键电路、LCD等外围器件,设计与开发了一套杨氏模量测量系统。由于采用了24位的高精度A/D芯片来替代传统的复杂的测量光路,所以该系统不但成本低,精度高,而且操作简单。更多还原

【Abstract】 A set of young’s modulus measuring system, which used AT89C51 single chip microcomputer as main control chip, and supplemented by constant current source circuit, high precision A/D sampling circuit, key circuit, LCD and other peripheral devices, has been designed and developed in this paper. Because of the adoption of 24 bit high-precision A/D chips to replace the traditional, complex optical measurement, it is not only low cost, high accuracy, but also simple to operate.更多还原