Wireless And Intelligent Light Pen Cmm's Hardware Circuit Design

The study object of this paper is the light pen CMM based on intelligent camera and wireles transceiver technology, and the light pen CMM's hardware design will be introduced emphatically. Recently, all the light pen CMM are pc-based systems, their image processing program and arithmetic program are all run in the computer. However, the light pen CMM this paper studied utilizes intelligent camera's feature of combining image collection, image processing and arithmetic processing to displace of general industrial camera, which can only collect image, and becomes the core of the whole CMM. In addition, the current light pen system's design is modified. In a word, the modified light pen CMM improves the portability and flexibility of the whole CMM system and the efficiency in field measurements.This paper analyzes the advantage and disadvantage of current light pen CMM, and modifys the design of the light pen CMM in two aspects: wireless adjustable light pen system and intelligent camera system.This paper's main work is the following aspects:The light pen CMM's structure and measurement principle are analyzed, and the modifing design is proposed for current light pen CMM system's disadvantage.The best design project of light pen and intelligent camera of the light pen CMM is made.The hardware circuits of the light pen system based on TLC5923 and the intelligent camera based on TMS320DM642 are designed. Combined with wireless module nRF24E1, the light pen CMM's wire and wireless data transmitting ways are designed, and the the hardware circuit of wireless data transmitting chunnel among light pen, intelligent camera and computer is design.