Noise elimination circuit for ultrasonic transition time measurement - contains three computer units, performs transition time value ordering and averaging

摘要

A first memory (10) provides unordered transition time values to a first computer unit (12) which feeds ordered transition time values to a second memory (139. The second memory feeds ordered values to a second computer (15). The first computer sends a ready signal to the second computer, a comparator (16) which transfers a reference value and an address multiplexer (14). A third computer unit (17) generates a summation clock and feeds the average transition time value to a display memory (18). USE/ADVANTAGE - The circuit eliminates noise pulses from transition time measurements, enabling expansion of range of use of ultrasonic transition time measurement equipment.