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随着我国公路事业的飞速发展,对路面标线的要求越来越高,人工画线无论从速度上和质量上都已经无法满足要求.因而国内一些单位采用机械凸轮机构自动控制画间断线的尺寸.但这种装置有以下缺点:第一,画不同间距的间断线,要更换不同的凸轮,使用很不方便;第二,画线精度差,累积误差大,一旦凸轮尺寸固定,即使画线尺寸不准确,也无法修正;第三,无法跟踪旧线. 为提供适合我国国情的画线自动控制装置,我们于1985年10月研制成功电子画线自动控
With the rapid development of highway industry in our country, the requirements for pavement markings are getting higher and higher, and the artificial drawing lines can not meet the requirements both in terms of speed and quality.Therefore, some domestic institutions adopt mechanical cam mechanisms to automatically control the broken lines Size, but this device has the following disadvantages: First, drawing a discontinuity of different spacing, to replace a different cam, the use of very inconvenient; second, poor precision drawing line, the cumulative error, once the cam size is fixed, even if the picture Line size is not accurate, it can not be amended; third, can not track the old line .In order to provide suitable for China’s national conditions drawing line automatic control device, we developed in October 1985 electronic drawing automatic control