A flowmeter for liquids, based on a temperature control loop integrated on a single chip is presented. The chip is mounted on top of a miniaturized cylindrical heat sink, allowing heat exchange between the chip and the fluid. Cancellation of the fluid temperature term is obtained by means of a pulsed driving method. Results of sensor characterization performed in deionized water are compared with simulations performed by means of a VHDL-AMS model. The effectiveness of an adaptive frequency compensation network in reducing the acquisition time is demonstrated by the model.
Measurement and modeling of pulsed mode flow meter for liquids based on a single chip probe
BRUSCHI, PAOLO;PIOTTO, MASSIMO
2006-01-01
Abstract
A flowmeter for liquids, based on a temperature control loop integrated on a single chip is presented. The chip is mounted on top of a miniaturized cylindrical heat sink, allowing heat exchange between the chip and the fluid. Cancellation of the fluid temperature term is obtained by means of a pulsed driving method. Results of sensor characterization performed in deionized water are compared with simulations performed by means of a VHDL-AMS model. The effectiveness of an adaptive frequency compensation network in reducing the acquisition time is demonstrated by the model.File in questo prodotto:
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