As an important aspect of environmental protection

there has been a problem of high cost and low accuracy for the accurate measurement of sewage discharge.A kind of improved slab intelligent sensor for flow measurement is researched and developed independently.Principle of system

hardware design and software structure is introduced.Through compared datas of the flow testing experiment of the Parshall flume in the laboratory

average error of the improved sensor is 1.76 %

which greatly reduces the error of the old one

the sensor meets requirements of high precise and low cost

and has broad application prospect in market.