High-precision Design And Implementation Of Scene Calibrator Based On The Dual-CPU

Scene calibrator researched in this paper is a versatile and precise equipment, which is used for checking out the electric energy meter and measuring electrical parameter. It is usually suitable for measurement and checking in department of electricity and so on. This thesis expatiates the development and status quo of scene calibrator, the ways of electrical parameter and the design of circuit of hardware and software,and analyses the experimental findings. The circuit adopts to dual CPU based on ARM and MCU.ARM takes charge of and collects data, and MCU is used for controlling the keyboard and display. Simultaneously, we make use of the arithmetic of FFT to insure the measurement accuracy. After repeated experiments prove that the parameter measurement of system has reached the expected precision.