| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method of preventing the vibration interference to a sphygmomanometer during a blood pressure measurement to compute an accurate blood pressure value. <P>SOLUTION: The sphygmomanometer computes an accurate blood pressure value by detecting a blood pressure pulsation subjected to vibrations during the blood pressure measurement and a voltage-time varying waveform of an acceleration sensor by a pressure sensor and the acceleration sensor provided in the sphygmomanometer, and by subtracting an interference variation waveform due to a signal from the measured blood pressure pulsation voltage-time varying waveform. During measurement, the sphygmomanometer detects the staying of the vibration interference within a preset permissible range by the acceleration sensor. If the vibration interference exceeds the permissible range, the sphygmomanometer transmits a warning signal to urge a subject of measurement to remeasure the blood pressure. If the vibration interference is within the permissible range, the sphygmomanometer computes an accurate blood pressure value by computing a vibration interference variation waveform of the voltage-time varying waveform on the basis of a transfer function when the acceleration sensor is in a vibrating condition, by subtracting the interference variation waveform from the voltage-time varying waveform of the blood pressure pulsation voltage measured by the pressure sensor during vibration interference, and by reducing it to the voltage-time varying waveform when there is no vibration interference. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
