基于RISC

　Aim　Tostudyareal-timetrafficflowmeasurementsystemprovidingnecessarystatisticsoftrafficflowparametersfortrafficdepartmentsthroughmeasuringvehiclenumber,velocityandothertrafficparameters.MethodsThereal-timetrafficflowmeasurementwasprocessedthroughimagedifferencemethod.Becauseofitscapabilityfordataprocessingathighspeed,theRISC(reducedinstructionsetcomputer)wasusedtocarryoutreal-timeandpracticalresearchonthewholesystem.ResultsExperimentdevicesofreal-timetrafficflowmeasurementwasdevelopedandthepracticalalgorithmofimageprocessingwasdesignedanddebugged.ConclusionInpracticaltrafficflowmeasurement,theprecisionofmeasuringvehiclenumberisover95%.Thesystemworkrobustlyundervariousconditions,itcanautomaticallycopewiththegradualandsuddenchangesoftheenvironmentlight.