Application And Research For Piezoelectric Bimorphs In Measuring Intraocular Pressure

Intraocular pressure is an important gist in diagnose(such as glaucoma) ,and is one of the important guidelines in observing state of an illness,estimating curative effect and appraising prognosis.Some of the clinic application of tonometer which based on traditional measure have applied many times,but there are more or less flaws on them.For example:high measuring expense,needing other assistent equipment and so on.The thesis uses bimorphs to bring a new way to measure the Intraocular Pressure.The main job are design of driving circuit of bimorphs,the basal hard-ware circuit,the measuring settings and the soft-ware for analysing data.The thesis firstly introduces the theory of bimorphs,and then put forward the total method.The hole system has 4 parts.The first one is design of driving circuit.This part mainly transforms and deals with the signal,so that it can drives bimorphs safetly,steadily and accurately;The seconde one is basall hard-ware circuit.It makes all system keep running steadily;The third one is the measuring settings.This part analyses how to establish the measuring settings and the measured-object in detail.It includes choosing and fixing up the measured-object and so on;The fourth one is the soft-ware for analysing data and modeling,and the last we can establish a lineary formula to reckon the pressure of the measured-object directly.The result shows that it was effective to use bimorphs to measure Intraocular pressure.And meanwhile we have established the relationship of the circuit passing through bimorphs and pressure in eyes.This equipment shows the new measuring method and the equipment is handy in using,practicability and differentiality.So that it makes great sense in medical research and clinic application.