Design of industrial digital refractometer on line of system

This paper describes the development of industrial development of online digital Refractometer technical requirements, The instrument design based on optical principle of total reflection. Through the Industrial liquid products refractive index and temperature detection, data processing system using single chip, finally get concentration of by products. By using modeling of mathematics, the connection of concentration with refraction index and temperature is found. The hardware institution, the modular function and subprogram library referred are given. Such technology problems as interference, moisture prevention, cooling etc. are considered in the whole design so as to improve the adaptive ability of product to real environment.