LI Shi-guang, LIU Chao, BAI Xing-zhen, et al. Design of ultrasonic wave heat meter based on TDC—GP22[J]. 2015, 34(8): 83-86. DOI: 10.13873/J.1000-9787(2015)08-0083-04.
The key issue of the measurement of ultrasonic wave heat meter is high accuracy of data. Select TDC—GP22 measurement chip
with low power consumption MSP430 series chip as MCU
with ultrasonic wave transducers and platinum resistance temperature sensor Pt1000 to measure flow rate and water temperature.Through three important features increased by TDC—GP22 to achieve accurate pulse interval measurement
within the test tube abnormalities and simplify multi-pulse result of the calculation. Through extensive testing results show that the designed calorimeter has low power consumption