The Research Of Metrology Equipment For Ultrasonic Doppler Flow Parameter Detection

This paper is one part of the research for Doppler flow error detection system. It sets up a normal status to carry out the error detection. The Doppler flood flow parameter metrology system will do much more experiment on the basis of the status, then do some statistics, and select the error limitation, thus come to the standards, and lay down the metrology norm, fill up this blankness.In the Ultrasonic Medical Engineering field, Doppler technology developed rapid, became the second main technology, and gains wide application. In fact, the Doppler instruments have a low accuracy and a high error, that would influent the clinical diagnosis, and even lead to a false conclusion. We could resolve this question though error calibration. Now the internal research is still on the start point, and the correlative metrology standards are still blank. On this background, in this paper we design a equipment based on AT89C51 for Doppler flow verification. The system uses a precisely controlled computer system whose mainly component is a active human blood flow mimicry in a TM container to create the flow-mimicking signal, through which we measure and calibrate kinds of Doppler equipment. It allows the user to perform a simple test on clinical Doppler equipment to see if it is operating properly.