新型无接触高温钢坯在线测长仪

A New Non-Contact On-Line Outline Length Measuring Instrument for Hot Steel Slabs

提出一种新型无接触高温钢坯在线测长仪。该测长仪采用３种线列ＣＣＤ图象传感器，能侧向斜视高温钢坯。在钢坯中心平移≤±４００ｍｍ，偏转角≤±１５°时，能有效地测量，测长相对误差≤±０．６３％。采取有效措施，测长仪能在恶劣的现场条件下可靠地工作。

A new non-contact on-line outline length measuringinstrument for hot steel slabs is proposed in this paper. Three lineas array CCD sensore are used in this instrument.It can view the hot steel slab obliquely.When the hotslab is within the offset distance ±400mm and declination ±15°,this instrument canwork effec tively with the relative length error ≤±0.63%. By taking effective measures,this instrument can work reliably in bad field working conditions.