介绍了上海嘉永计算机公司的非接触式摄像定尺的基本原理及系统组成,对使用该型号定尺的优点及缺点进行了说明。并分析了定尺系统误差的产生原因,从软件、硬件以及附属设备上进行了相应的优化,提高了定尺系统的测量精度,简化了定尺的标定方式,并在宽后板连铸机生产线的使用中达到了较高的稳定性。 This paper introduces the basic principle and system composition of the non-contact camera scale of Shanghai Jiayong Computer Company, and describes the advantages and disadvantages of using this model. The reasons for the error of the sizing system are analyzed. The software, hardware and ancillary equipment are optimized accordingly. The measuring accuracy of the sizing system is improved and the calibration method of the sizing system is simplified. The use of the production line reached a higher stability.