The Research Of Illuminometer Based On Embedded

Humans and all living creatures live in the environment of the light, no light, all life activities will stop. By the light of this important status, developing the photometric measurement instrument is very necessary.The existing illuminometer with embedded microcontroller processors as the central processing unit, and displayed with a touch screen is not common. Based on this, this paper designed an illuminometer with ARM processor which is displayed and controlled with a touch-screen. Hardware part is mainly made of photoelectric probe with the cosine corrector as well as the human eye visual correction filter, photoelectric preamplifier and signal conditioning circuit, analog-to-digital conversion circuit, embedded microcontroller processor, touch screen display and control circuit. The software part is mainly composed of interface module of VxWorks real-time operating system, A/D converter module, touch-screen interface module and the range judgment module. The illuminometer is used as a laboratory experiment instrument by the experimenter.