Title: On-line diameter measurement of pipes and wires by laser method
Application Number: 92101090 Application Date: 1992.02.27
Publication Number: 1076021 Publication Date: 1993.09.08
Approval Pub. Date: Granted Pub. Date: 1995.03.15
International Classifi-cation: G01B11/10
Applicant(s) Name: Qinghua Univ. Address: 100084
Inventor(s) Name: Li Fengxiang, Li Xinqiu
Attorney & Agent: ZHANG ZHIDONG
Abstract:
     Based on the relative principle, the measuring method uses ordinary focusing lens to measure the diameter of an object, i.e. it uses a beam of parallel light to simultaneously scan the object to be measured and a raster, and uses the raster to measure the object. The present invention can preset a reference value and a deviation value, the measured value is displayed by numerical code tubes with alarm for upper and lower limits. The apparatus features simple, stable and reliable operation, it is suitable for on-line measurement and product inspection for cable, rubber pipe, plastic pipe, etc.
Time: 9