The traditional bar code scanner is influenced by the length of data line, but the farthest distance of the wireless bar code
scanner of wireless communication is generally between 30m and 100m on the market. By rebuilding the traditional
CCD optical bar code scanner, a CMOS code scanner is designed based on the ZigBee to meet the demands of market.
The scan system consists of the CMOS image sensor and embedded chip S3C2401X, when the two dimensional bar code
is read, the results show the inaccurate and wrong code bar, resulted from image defile, disturber, reads image condition
badness, signal interference, unstable system voltage. So we put forward the method which uses the matrix evaluation
and Read-Solomon arithmetic to solve them. In order to construct the whole wireless optics of bar code system and to
ensure its ability of transmitting bar code image signals digitally with long distances, ZigBee is used to transmit data to
the base station, and this module is designed based on image acquisition system, and at last the wireless
transmitting/receiving CC2430 module circuit linking chart is established. And by transplanting the embedded RTOS
system LINUX to the MCU, an applying wireless CMOS optics bar code scanner and multi-task system is constructed.
Finally, performance of communication is tested by evaluation software Smart RF. In broad space, every ZIGBEE node
can realize 50m transmission with high reliability. When adding more ZigBee nodes, the transmission distance can be
several thousands of meters long.