ELECTRONIC BLOOD PRESSURE METER

摘要

An electronic blood pressure meter includes a cuff that is to be worn on a measurement area, a piezoelectric pump that adjusts a pressure applied to the cuff, a drive circuit that drives the piezoelectric pump, and a controller that outputs, to the drive circuit, a pulse signal defining a driving timing of the piezoelectric pump. The drive circuit includes a switching circuit for switching a connection relationship between respective voltages applied to both ends of the piezoelectric pump in response to corresponding first and second driving signals, and a signal generation circuit that outputs the first and second driving signals based on the pulse signal outputted from the controller. The signal generation circuit has a signal conditioning circuit hat adjusts timings of the first and second driving signals so that the phases of the first and second driving signals do not overlap.

主权项

1. An electronic blood pressure meter comprising:
a cuff that is to be worn on a measurement area; a piezoelectric pump that adjusts a pressure applied to the cuff; a drive circuit that drives the piezoelectric pump; and a controller that outputs, to the drive circuit, a pulse signal defining a driving timing of the piezoelectric pump, wherein the drive circuit includes:
a switching circuit that switches a connection relationship between respective voltages applied to both ends of the piezoelectric pump in response to corresponding first and second driving signals; anda signal generation circuit that outputs the first and second driving signals based on the pulse signal outputted from the controller, andwherein the signal generation circuit has a signal conditioning circuit that adjusts timings of the first and second driving signals so that the phases of the first and second driving signals do not overlap.