INTRODUCTIONRecent development in m

INTRODUCTIONRecent development in manufacturing industries has been increasing a demand ofhighly more precise, accurate, robust and comparatively less bulky sensormeasurement systems to be developed. There various parameter measurementsrequired for a product to be of finished and fine quality; Thickness is one of its kinds.Thickness measurement is very important for the industries whose end product is insheets which include sheets of polymer, metal, plastic, paper, glass and mostimportant wood. The areas where this kind of thickness measurement is crucial are inautomobiles, building materials, electronic devices and paper industries.There are various conventional method of measuring the thickness of sheets such asultrasonic, radiation, laser, optical, magnetic, inductive . F.Tojo et al. developed optical and magnetic sensing system for measurement of thickness ofpolymer sheet. Nadir et al presented a laser technology for thickness measurementof metallic plates. Wei li et al presented an eddy current method for thicknessmeasurement of metallic plates. K.Suresh et al investigated a resonance methodfor non-magnetic and conducting sheets thickness measurement.LVDT is basically an inductive transducer most widely used for measurement ofdisplacement . Due to the characteristic of LVDT, It is used as secondarytransducer for industrial application such as pressure, flow, acceleration, force,seismic shock and deformation measurement . This paper presents LVDTbased approach for Thickness measurement application using ZigBee and LabVIEWinterface for display. The system features the use of wireless communication protocoli.e. ZigBee; System can be used in remote areas where bulky system gets difficult toinstallation. The motivation of this work is to provide an alternative with low cost,rugged, accurate, less bulky, easy to configure. So this system can be used to measurethickness of glass, plastic, rubber and wooden sheets in industry.