The present invention relates to a blood pressure measurement device with a MEMS pump, which comprises a wrist band with an gas bladder, which is wrapped around a to-be-measured portion； a MEMS pump, which fills a gas into the gas bladder； a pressure sensor, which monitors a pressure inside the gas bladder； and a microcontroller, which successively receives multiple pressure signals from the pressure sensor during a gas filling process that fills the gas into the gas bladder and converts the pressure signals into blood pressure readings, wherein the microcontroller controls a level of a driving voltage of the MEMS pump so that a gas filling rate of the MEMS pump is kept within a predetermined range of gas filling rate. The present invention also provides a frequency-fixed voltage-varying control method for use in the above blood pressure measurement device.本發明係關於一種具有壓電幫浦的血壓測量裝置，其包括有一具有氣囊之腕帶，係纏繞在一待測部位上；一壓電幫浦(MEMS pump)，係用以將氣體充入該氣囊內；一壓力感測器，係用以監測該氣囊內的壓力；以及一微控制器，係在氣體充入該氣囊內的一充氣過程中，從該壓力感測器連續地接收多個壓力訊號，並將該等壓力訊號換算成血壓值；其中，該微控制器係控制該壓電幫浦的驅動電壓位準，使該壓電幫浦之一氣體充入速率維持在一預定充氣速率範圍內。本發明另提供一種應用在上述血壓測量裝置的定頻變壓的控制方法。
